摘要:
A SLDRAM System is provided with a plurality of in-circuit, calibratable memory modules and a memory controller for issuing unicast and multicast command packets to the memory modules. Command packets are transmitted over a unidirectional command link that includes a complementary pair of command clock lines, a command FLAG line and a plurality of noncomplemented command bit lines. Each of the command clock lines, command bit lines and the FLAG line is a SLIO transmission line. Data transfer operations are carried out in response to the command packets over one or more bidirectional data links that each includes two complementary pairs of data clock lines, and a plurality of noncomplemented data bit lines. Each of the data clock lines and the data bit lines is a SLIO transmission line. Each SLIO transmission line is single-end terminated and preferably tapped into by way of stub resistors.
摘要:
A memory circuit with glitch-less transfer of timing information. In one embodiment, the invention is a memory circuit including a controller, multiple loads, a command link communicatively coupling the controller and the loads and a data link. The data link includes multiple data clocks and communicatively couples the controller and the multiple loads. In another embodiment, the invention transfers data between a memory controller and a RAM by coupling the controller and the RAM using a data bus and multiple clock lines. The invention transfers a read/write command from the controller to the RAM and then transfers data associated with the read/write command, clocking the data using one of the clock lines.
摘要:
A memory device with a dynamic random access memory (DRAM) having an array of a plurality of rows and columns of memory elements; a cache memory formed integrally with the DRAM and includinmg at least one register with a plurality of memory elements and connected in pitch-matched relation to the DRAM array, the number of memory elements in a row of the DRAM being n times the number of memory elements in the at least one register, n being an integer greater than or equal to 2; and a connector for connecting the at least one register to the DRAM, the connector for the at least one register being a bus having a width corresponding to the number of memory elements therein.
摘要:
A single chip display processor comprised of a dynamic random access memory (DRAM) for storing at least one of graphics and video pixel data, a pixel data unit (PDU) for processing the pixel data, integrated in the same integrated circuit (IC) chip as the DRAM, the IC chip further comprising a massively parallel bus for transferring blocks of pixel data at the same time from the DRAM to the PDU, whereby the PDU can process the blocks of pixel data for subsequent display of processed pixel data.
摘要:
A single chip display processor comprised of a dynamic random access memory (DRAM) for storing at least one of graphics and video pixel data, a pixel data unit (PDU) for processing the pixel data, integrated in the same integrated circuit (IC) chip as the DRAM, the IC chip further comprising a massively parallel bus for transferring blocks of pixel data at the same time from the DRAM to the PDU, whereby the PDU can process the blocks of pixel data for subsequent display of processed pixel data.
摘要:
A single chip display processor comprised of a dynamic random access memory (DRAM) for storing at least one of graphics and video pixel data, a pixel data unit (PDU) for processing the pixel data, integrated in the same integrated circuit (IC) chip as the DRAM, the IC chip further comprising a massively parallel bus for transferring blocks of pixel data at the same time from the DRAM to the PDU, whereby the PDU can process the blocks of pixel data for subsequent display of processed pixel data.
摘要:
A single chip display processor comprised of a dynamic random access memory (DRAM) for storing at least one of graphics and video pixel data, a pixel data unit (PDU) for processing the pixel data, integrated in the same integrated circuit (IC) chip as the DRAM, the IC chip further comprising a massively parallel bus for transferring blocks of pixel data at the same time from the DRAM to the PDU, whereby the PDU can process the blocks of pixel data for subsequent display of processed pixel data.
摘要:
A system including one or more memory devices, and an error detection and correction method are disclosed. A memory device of the system includes an input for receiving a packet. A first portion of the packet may include at least one command byte, and a second portion of the packet may include parity bits to facilitate command error detection. The memory device may include an error manager configured to detect, based on the parity bits, whether an error exists in the at least one command byte, and circuitry configured to provide the packet to the error manager.
摘要:
A composite memory device including discrete memory devices and a bridge device for controlling the discrete memory devices. A configurable clock controller receives a system clock and generates a memory clock having a frequency that is a predetermined ratio of the system clock. The system clock frequency is dynamically variable between a maximum and a minimum value, and the ratio of the memory clock frequency relative to the system clock frequency is set by loading a frequency register with a Frequency Divide Ratio (FDR) code any time during operation of the composite memory device. In response to the FDR code, the configurable clock controller changes the memory clock frequency.
摘要:
A clock mode configuration circuit for a memory device is described. A memory system includes any number of memory devices serially connected to each other, where each memory device receives a clock signal. The clock signal can be provided either in parallel to all the memory devices or serially from memory device to memory device through a common clock input. The clock mode configuration circuit in each memory device is set to a parallel mode for receiving the parallel clock signal, and to a serial mode for receiving a source synchronous clock signal from a prior memory device. Depending on the set operating mode, the data input circuits will be configured for the corresponding data signal format, and the corresponding clock input circuits will be either enabled or disabled. The parallel mode and the serial mode is set by sensing a voltage level of a reference voltage provided to each memory device.